Exerciser

ABSTRACT

An exerciser includes an object rotatable about a longitudinal axis. The object includes an outer surface and an inner surface opposite to the outer surface. The inner surface includes an axle seat extending along the longitudinal axis. A receiving space is defined between the inner surface and the axle seat. An axle is rotatably coupled to the axle seat of the object. The axle includes two ends extending beyond the outer surface of the object. Two jackets are mounted around the two ends of the axle. At least one weight is removably received in the receiving space of the object for increasing an overall weight of the exerciser.

BACKGROUND OF THE INVENTION

The present invention relates to an exerciser and, more particularly, toan exerciser including an axle extending through an object andconfigured to be held by one or both hands of a user to move the objectvertically or to push and pull the object on the ground for exercisingvarious muscle groups of the body of the user.

Among exercisers for exercising various muscle groups of the body, atype of exerciser having an abdomen exercising wheel is used to trainwaist muscles and abdomen muscles. The abdomen exercising wheel includesa wheel having circular cross sections and a handle extending throughthe wheel. The wheel can be placed on the ground, and a user can kneelon the ground with two hands gripping the handle. Thus, the user canroll the wheel forwards through a distance and then pull the wheel back,thereby stretching the waist muscles and abdomen muscles. Another typeof exerciser includes an elastic cord having two handles on two endsthereof for proceeding stretching movement of the hands and legs.Specifically, the user can step on the elastic cord with one or bothlegs and stretching the pull string with both hands, thereby stretchingthe muscle groups at the arms, hands, waist, or legs. A further type ofexerciser includes a barbell structure having a rod and two weightplates on two ends of the rod. The user can grip the rod with both handsto proceed with snatching or cleaning and jerking. Weight plates ofdifferent weights can be disposed on the two ends of the rod to providedifferent combinations. Furthermore, dumbbells of different pounds allowusers to proceed with arm training by moving a dumbbell vertically withone hand.

The above exercisers have different arrangements and operations. Forexample, the abdomen exercising wheel is light and only useful to rollon the ground for exercising the abdomen muscles, but is not suitable inweight lifting as provided by dumbbells or barbells. Dumbbells andbarbells permit weight lifting with one or both hands, but are notsuitable for rolling on the ground like abdomen exercising wheels. Asfor the elastic cord structure, they can only allow stretching andelastic returning, but cannot be combine with generally availableabdomen exercising wheels, dumbbells, or barbells. Thus, a need existsfor a novel exerciser that mitigates and/or obviates the abovedrawbacks.

BRIEF SUMMARY OF THE INVENTION

In a first aspect, the present invention provides an exerciserincluding:

an object rotatable about a longitudinal axis, wherein the objectincludes an outer surface and an inner surface opposite to the outersurface, wherein the inner surface includes an axle seat extending alongthe longitudinal axis, and wherein a receiving space is defined betweenthe inner surface and the axle seat;

an axle rotatably coupled to the axle seat of the object, wherein theaxle includes two ends extending beyond the outer surface of the object;

two jackets mounted around the two ends of the axle; and

at least one weight removably received in the receiving space of theobject for increasing an overall weight of the exerciser.

In an example, two limiting flanges are disposed on the outer surface ofthe object and are spaced from each other along the longitudinal axis.An anti-slip ring is disposed around a maximum diameter of the outersurface of the object and is located between the two limiting flanges.The anti-slip ring has a thickness greater than a height of each of thetwo limiting flanges.

In an example, the object includes a first half shell and a second halfshell detachably coupled with the first half shell. The axle furtherincludes a first section and a second section aligned with the firstsection along the longitudinal axis. The first section is disposed onthe first half shell. The second section is disposed on the second halfshell. At least one partitioning board is disposed between an outerperiphery of the axle seat and the inner surface of the object and hastwo portions respectively disposed in the first half shell and thesecond half shell. The first half shell includes a plurality ofthrough-holes spaced from each other in a circumferential directionabout the longitudinal axis. The second half shell includes a pluralityof screw holes respectively aligned with the plurality of through-holesof the first half shell. A plurality of screws extends through theplurality of through-holes of the first half shell and threadedlycouples with the plurality of screw holes.

In an example, two positioning members are coupled to the two ends ofthe axle, respectively. Each of two ends of an elastic cord unit isdetachably coupled with a respective one of the two positioning members.

In an example, the elastic cord unit includes:

two elastic cords each including two ends, wherein each of the twoelastic cords includes a first hook and a second hook attached to thetwo ends thereof, respectively, wherein each first hook is detachablycoupled with a respective one of the two positioning members; and

a positioning strap including two side flaps, wherein each of the twoside flaps has a coupling ring, wherein each second hook is detachablycoupled with the coupling ring of a respective one of the two sideflaps, and wherein the positioning strap is non-stretchable and includesa protective pad on a surface thereof.

In an example of use of the exerciser, the elastic cord unit is detachedfrom the two ends of the axle of the object. In this example, a usergrips the two jackets on two ends of the axle and kneels down on theground. After placing the anti-slip ring of the object on the ground,the user can roll the object back and forth on the ground, such that theuser can bend the waist upwards and downwards, thereby exercising themuscles at the waist, abdomen, arms, and back of the user. In anotherexample of use, the user can grip the sleeves on the axle rod with bothhands and can lift the object (with the weights) upwards or lift theobject (with or without the weights) up and down, achieving exercisingeffects as provided by a barbell.

Alternatively, the elastic cord unit can be attached to the two ends ofthe axle on the object with the weights. Namely, two hooks respectivelyof the two elastic cords are coupled with the positioning members on theaxle. Thus, the user can hold the jackets on the two ends of the axleand can kneel on the protective pad which provides a comfort, protectingeffect. Then, the user can roll the object back and forth on the groundto exercise the muscles at the waist, abdomen, arms, and back of theuser. Since the user has to pull the two elastic cords, the load isincreased to further exercise the muscles. Furthermore, the elasticreturning forces of the two elastic cords provide the user with aforce-saving effect during the returning movement of the two elasticcords.

In an alternative embodiment, an exerciser according to the presentinvention includes an object rotatable about a longitudinal axis. Theobject includes an outer surface and an inner surface opposite to theouter surface. The inner surface includes an axle seat extending alongthe longitudinal axis. A receiving space is defined between the innersurface and the axle seat. An axle is rotatably coupled to the axle seatof the object. The axle includes two ends extending beyond the outersurface of the object. Two jackets are mounted around the two ends ofthe axle. Two positioning members are coupled to the two ends of theaxle, respectively. An elastic cord unit includes two ends. Each of thetwo ends of the elastic cord unit is detachably coupled with arespective one of the two positioning members. In an example, theelastic cord unit includes two elastic cords and a positioning strap.Each of the two elastic cords includes a first hook and a second hookattached to two ends thereof, respectively. Each first hook isdetachably coupled with a respective one of the two positioning members.The positioning strap includes two side flaps. Each of the two sideflaps has a coupling ring. Each second hook is detachably coupled withthe coupling ring of a respective one of the two side flaps. Thepositioning strap is non-stretchable and includes a protective pad on asurface thereof. Furthermore, two limiting flanges are disposed on theouter surface of the object and are spaced from each other along thelongitudinal axis. An anti-slip ring is disposed around a maximumdiameter of the outer surface of the object and is located between thetwo limiting flanges. The anti-slip ring has a thickness greater than aheight of each of the two limiting flanges.

Since the exerciser includes the elastic cord unit, even if the objectdoes not receive the at least one weight, the user can kneel on theprotective pad of the elastic cord unit and can roll the object back andforth on the ground by gripping the two ends of the axle. Furthermore,in a sitting position in which the feet of the user abut against theprotective pad or a standing position in which the feet of the userstand on the protective pad, the user can grip the two ends of the axleand can move the object backwards or upwards while stretching the twoelastic cords, which increases the load for exercising the muscles ofthe body.

In a second aspect, the present invention provides an exerciserincluding:

an object including an outer surface and an inner surface opposite tothe outer surface, wherein the inner surface includes an axle seatextending along the longitudinal axis, and wherein a receiving space isdefined between the inner surface and the axle seat;

an axle coupled to the axle seat of the object, wherein the axle has alength larger than or equal to an outer diameter of the object;

at least one weight removably received in the receiving space of theobject 30;

a positioning member coupled to one of the two ends of the axle;

a handle coupled to and at a non-parallel angle to another of the twoends of the axle; and

an elastic cord including two ends, wherein the elastic cord includes afirst hook and a second hook attached to the two ends thereof,respectively,

wherein the object is located between the positioning member and thehandle, and wherein the handle is configured to be gripped by a user tolift the object, and wherein the first hook is selectively anddetachably coupled with the positioning member and the second hook isselectively and detachably coupled with a fixed member on a fixedsurface, increasing a load to the user.

In an example, the object includes a first half shell and a second halfshell detachably coupled with the first half shell. The axle furtherincludes a first section and a second section aligned with the firstsection along the longitudinal axis. The first section is disposed onthe first half shell. The second section is disposed on the second halfshell. At least one partitioning board is disposed between an outerperiphery of the axle seat and the inner surface of the object and hastwo portions respectively disposed in the first half shell and thesecond half shell. The first half shell includes a plurality ofthrough-holes spaced from each other in a circumferential directionabout the longitudinal axis. The second half shell includes a pluralityof screw holes respectively aligned with the plurality of through-holesof the first half shell. A plurality of screws extends through theplurality of through-holes of the first half shell and threadedlycouples with the plurality of screw holes.

In this exerciser, the user can grip the handle to lift the object,proceeding with an exercising effect like a dumbbell. Alternatively, inthe case that the elastic cord is attached, the elastic cord increasesthe load while lifting the object, and the elastic returning force ofthe elastic cord can rapidly return the object from a certain height toits original position, shortening the time for retuning.

In a third aspect, the present invention provides an exerciserincluding:

an object including an outer surface and an inner surface opposite tothe outer surface, wherein the inner surface includes an axle seatextending along the longitudinal axis, and wherein a receiving space isdefined between the inner surface and the axle seat;

an axle having a length larger than or equal to an outer diameter of theobject;

at least one weight removably received in the receiving space of theobject;

two jackets;

two positioning members;

a handle;

two elastic cords each including two ends, wherein each of the twoelastic cords includes a first hook and a second hook attached to thetwo ends thereof, respectively;

a positioning strap including two side flaps, wherein each of the twoside flaps has a coupling ring, and wherein the positioning strap isnon-stretchable and includes a protective pad on a surface thereof;

wherein the exerciser includes a rolling mode having the object, theaxle, the two jackets, the two positioning members, the two elasticcords, and the positioning strap and a lifting mode having the object,the axle, one of the two positioning members, one of the two elasticcords, and the handle,

wherein when the exerciser is in the rolling mode, the axle is rotatablycoupled with the axle seat with two ends of the axle extending beyondthe object, the two jackets are mounted around the two ends of the axle,the two positioning members are mounted to the two ends of the axle,each first hook of each of the two elastic cords is detachably coupledwith a respective one of the two positioning members, each second hookof each of the two elastic cords is detachably coupled with the couplingring of a respective one of the two side flaps of the positioning strap,

wherein when the exerciser is in the lifting mode, the axle is rotatablycoupled with the axle seat, the one of the two positioning members iscoupled to one of two ends of the axle, the handle is coupled to anotherend of the two ends of the axle and is at a non-parallel angle to theaxle, the first hook of the one of the two elastic cords is detachablycoupled with the one of the two positioning members, and the second hookof the one of the two elastic cords is detachably coupled with a fixedmember on a fixed surface.

In an example, the object includes a first half shell and a second halfshell detachably coupled with the first half shell. The axle furtherincludes a first section and a second section aligned with the firstsection along the longitudinal axis. The first section is disposed onthe first half shell. The second section is disposed on the second halfshell. At least one partitioning board is disposed between an outerperiphery of the axle seat and the inner surface of the object and hastwo portions respectively disposed in the first half shell and thesecond half shell. The first half shell includes a plurality ofthrough-holes spaced from each other in a circumferential directionabout the longitudinal axis. The second half shell includes a pluralityof screw holes respectively aligned with the plurality of through-holesof the first half shell. A plurality of screws extends through theplurality of through-holes of the first half shell and threadedlycouples with the plurality of screw holes.

Thus, the components according to the present invention can be selectedto optionally form the exerciser of a rolling mode or the exerciser of alifting mode, providing various exercising modes. Furthermore, theexerciser according to the present invention can have variouscombinations of components to meet different user needs.

The present invention will become clearer in light of the followingdetailed description of illustrative embodiments of this inventiondescribed in connection with the drawings.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded, perspective view of an embodiment of an exerciseraccording to the present invention.

FIG. 2 is a perspective view of the exerciser of FIG. 1 with an elasticcord detached.

FIG. 3 is a cross sectional view taken along section line 3-3 of FIG. 2.

FIG. 4 is a diagrammatic view illustrating use of the exerciser withoutthe elastic cord and with a user in a kneeling position.

FIG. 5 is a diagrammatic view illustrating use of the exerciser with theelastic cord and with the user in the kneeling position.

FIG. 6 is a diagrammatic view illustrating use of the exerciser with theelastic cord and with the user in a sitting position.

FIG. 7 is a diagrammatic view illustrating use of the exerciser with theelastic cord and with the user in a standing position.

FIG. 8 is an exploded, perspective view of another embodiment of theexerciser according to the present invention.

FIG. 9 is a perspective view of the exerciser of FIG. 8 with an elasticcord detached.

FIG. 10 is a diagrammatic view illustrating use of the exerciser withoutthe elastic cord of FIG. 9.

FIG. 11 is a diagrammatic view illustrating use of the exerciser withthe elastic cord of FIG. 9.

All figures are drawn for ease of explanation of the basic teachings ofthe present invention only; the extensions of the figures with respectto number, position, relationship, and dimensions of the parts to formthe embodiments will be explained or will be within the skill of the artafter the following teachings of the present invention have been readand understood. Further, the exact dimensions and dimensionalproportions to conform to specific force, weight, strength, and similarrequirements will likewise be within the skill of the art after thefollowing teachings of the present invention have been read andunderstood.

Where used in the various figures of the drawings, the same numeralsdesignate the same or similar parts. Furthermore, when the terms“first”, “second”. “inner”, “outer”, “side”, “end”. “portion”,“section”. “longitudinal”, “circumferential”, “vertical”, “forwards”,“backwards”, “upwards”, “downwards”, “length”, “height”, “thickness”,and similar terms are used herein, it should be understood that theseterms have reference only to the structure shown in the drawings as itwould appear to a person viewing the drawings and are utilized only tofacilitate describing the invention.

DETAILED DESCRIPTION OF THE INVENTION

With reference to FIGS. 1-3, an exerciser 10 of an embodiment accordingto the present invention includes an object 20 having an outer surface22 and an inner surface 24 opposite to the outer surface 22. The innersurface 24 includes an axle seat 26 extending along a longitudinal axisX. The axle seat 26 includes a through-hole 28 extending along thelongitudinal axis X. A receiving space 32 is defined between the innersurface 24 and the axle seat 26. An axle 36 extends through thethrough-hole 28 of the axle seat 26 and is rotatably coupled with theaxle seat 26. Two ends of the axle 36 extends beyond the outer surface22 of the object 20. Two jackets 40 are mounted around the two ends ofthe axle 36 beyond the outer surface 22 of the object 20. A plurality ofweights 52 is removably disposed in the receiving space 32 of the object20 to increase or adjust the overall weight of the exerciser 10.Furthermore, each of the two ends of the axle 36 has a screw hole 38.Each of two positioning members 42 includes a threaded portion 44 inthreading connection with one of the screw holes 38 of the axle 36. Twolimiting flanges 27 are disposed on the outer surface 22 of the object20 and are spaced from each other along the longitudinal axis X.

With reference to FIGS. 1-3, the object 20 includes a first half shell20A and a second half shell 20B that is detachably coupled with thefirst half shell 20A. The axle 26 further includes a first section 26Aand a second section 26B aligned with the first section 26A along thelongitudinal axis X. The first section 26A is disposed on the first halfshell 20A. The second section 26B is disposed on the second half shell20B. At least one partitioning board 30 is disposed between an outerperiphery of the axle seat 26 and the inner surface 24 of the object 20.In this embodiment, the receiving space 32 receives a plurality ofpartitioning boards 30 each having two portions respectively disposed inthe first half shell 20A and the second half shell 20B. The first halfshell 20A includes a plurality of through-holes 21 spaced from eachother in a circumferential direction about the longitudinal axis X. Thesecond half shell 20B includes a plurality of screw holes 23 spaced fromeach other in a circumferential direction about the longitudinal axis Xand respectively aligned with the plurality of through-holes 21 of thefirst half shell 20A. A plurality of screws 25 extends through theplurality of through-holes 21 of the first half shell 20A and threadedlycouples with the plurality of screw holes 23. Furthermore, an anti-slipring 34 made of plastic or rubber material is disposed around a maximumdiameter of the outer surface 22 of the object 20 and surrounds thelongitudinal axis X. In this embodiment, the anti-slip ring 34 isdisposed at an intersection of the first half shell 20A and the secondhalf shell 20B and is located between the two limiting flanges 27. Theanti-slip ring 34 has a thickness greater than a height of each of thetwo limiting flanges 27.

With reference to FIGS. 1 and 2, the exerciser 10 further includes anelastic cord unit 45. In this embodiment, the elastic cord unit 45includes two elastic cords 50 and a positioning strap 47 detachablydisposed between the two elastic cords 45. The positioning strap 47 isnon-stretchable and includes a protective pad 46 on a surface thereof.The knees of a user in a kneeling position can abut against theprotective pad 46, providing a comfort, protecting effect. Two hooks 51are respectively coupled with two ends of a respective one of the twoelastic cords 50. One of the two hooks 51 of each of the two elasticcords 50 is detachably coupled with a respective one of the twopositioning members 42 on the axle 36. Two ends of the positioning strap47 are twisted to form two side flaps 48, with extending directions ofthe two side straps 48 being parallel to each other. Each of the twoside straps 48 includes a distal end having a coupling ring 49 fordetachably coupling with a respective one of the two hooks 51 of arespective one of the two elastic cords 50.

With reference to FIG. 3, at least one weight 52 can be disposed in thereceiving space 32 of the object 20. In the embodiment shown in FIGS. 1and 3, two weights 52 are disposed in the receiving space 32 and can bein the form of sandbags or other weights having a specific weight.Nevertheless, the number of the weights 52 can be varied according toneeds.

With reference to FIG. 4, in an example of use of the exerciser 10, theelastic cord unit 45 is detached from the two ends of the axle 36 of theobject 20. In this example, a user grips the two jackets 40 on two endsof the axle 36 and kneels down on the ground. After placing theanti-slip ring 34 of the object 20 on the ground, the user can roll theobject 20 back and forth on the ground, such that the user can bend thewaist upwards and downwards, thereby exercising the muscles at thewaist, abdomen, arms, and back of the user. In another example of use,the user can grip the sleeves 40 on the axle rod 36 with both hands andcan lift the object 20 (with the weights 52) upwards or lift the object20 (with or without the weights 52) up and down, achieving exercisingeffects as provided by a barbell.

With reference to FIG. 5, alternatively, the elastic cord unit 45 can beattached to the two ends of the axle 36 on the object 20 with theweights 52. Namely, two hooks 51 respectively of the two elastic cords50 are coupled with the positioning members 42 on the axle 36. Thus, theuser can hold the jackets 40 on the two ends of the axle 36 and cankneel on the protective pad 46 which provides a comfort, protectingeffect. Then, the user can roll the object 20 back and forth on theground to exercise the muscles at the waist, abdomen, arms, and back ofthe user. Since the user has to pull the two elastic cords 50, the loadis increased to further exercise the muscles. Furthermore, the elasticreturning forces of the two elastic cords 50 provide the user with aforce-saving effect during the returning movement of the two elasticcords 50.

Furthermore, when the elastic cord unit 45 is attached to the two endsof the axle rod 36, the user can exercise in a sitting position (seeFIG. 6) or a standing position (FIG. 7). When the user chooses thesitting position, both feet of the user abut against the protective pad46, and the user can lift the object 20 upwards and backwards forexercising purposes. When the user chooses the standing position, bothfeet of the user stand on the protective pad 46, and the user can liftthe object 20 upwards and downwards for exercising purposes.

Since the exerciser 10 according to the present invention includes theelastic cord unit 45, even if the object 20 does not receive the weights52, the user can kneel on the protective pad 46 of the elastic cord unit45 and can roll the object 20 back and forth on the ground by grippingthe two ends of the axle 36. Furthermore, in the sitting position inwhich the feet of the user abut against the protective pad 46 or thestanding position in which the feet of the user stand on the protectivepad 46, the user can grip the two ends of the axle 36 and can move theobject 20 backwards or upwards while stretching the two elastic cords50, which increases the load for exercising the muscles of the body.

With reference to FIGS. 8 and 9, an exerciser 12 of another embodimentaccording to the present invention includes an object 20 having an outersurface 22 and an inner surface 24 opposite to the outer surface 22. Theinner surface 24 includes an axle seat 26 extending along a longitudinalaxis X. The axle seat 26 includes a through-hole 28 extending along thelongitudinal axis X. A receiving space 32 is defined between the innersurface 24 and the axle seat 26. An axle 36 extends through thethrough-hole 28 of the axle seat 26 and is coupled with the axle seat26. The length of the axle 36 is larger or equal to an outer diameter ofthe object 20. Furthermore, each of the two ends of the axle 36 has ascrew hole 38. A positioning member 42 includes a threaded portion 44 inthreading connection with one of the screw holes 38 of the axle 36.Thus, the positioning member 42 is disposed on the one of the two endsof the axle 36 and is located on the outer surface 22 of the object 20.A handle 54 includes an engaging portion 56 extending perpendicularlyfrom an intermediate portion of the handle 54. The engaging portion 56has a threaded section in threading connection with another screw hole38 of the axle 36. Thus, the handle 54 is at a non-parallel angle to theaxle 36 and permits a user to lift the object 20. Furthermore, theexerciser 12 further includes an elastic cord 50 having two ends. Twohooks 51 are disposed on the two ends of the elastic cord 50,respectively.

With reference to FIGS. 8 and 9, the object 20 includes a first halfshell 20A and a second half shell 20B that is detachably coupled withthe first half shell 20A. The axle 26 further includes a first section26A and a second section 26B aligned with the first section 26A alongthe longitudinal axis X. The first section 26A is disposed on the firsthalf shell 20A. The second section 26B is disposed on the second halfshell 20B. At least one partitioning board 30 is disposed between anouter periphery of the axle seat 26 and the inner surface 24 of theobject 20. In this embodiment, the receiving space 32 receives aplurality of p partitioning boards 30 each having two portionsrespectively disposed in the first half shell 20A and the second halfshell 20B. The first half shell 20A includes a plurality ofthrough-holes 21 spaced from each other in a circumferential directionabout the longitudinal axis X. The second half shell 20B includes aplurality of screw holes 23 spaced from each other in a circumferentialdirection about the longitudinal axis X and respectively aligned withthe plurality of through-holes 21 of the first half shell 20A. Aplurality of screws 25 extends through the plurality of through-holes 21of the first half shell 20A and threadedly couple with the plurality ofscrew holes 23. A plurality of weights 52 is removably disposed in thereceiving space 32 of the object 20 to increase or adjust the overallweight of the exerciser 10.

With reference to FIGS. 8 and 9, two limiting flanges 27 are disposed onthe outer surface 22 of the object 20 and are spaced from each otheralong the longitudinal axis X. Furthermore, an anti-slip ring 34 made ofplastic or rubber material is disposed around a maximum diameter of theouter surface 22 of the object 20 and surrounds the longitudinal axis X.In this embodiment, the anti-slip ring 34 is disposed at an intersectionof the first half shell 20A and the second half shell 20B and is locatedbetween the two limiting flanges 27. The anti-slip ring 34 has athickness greater than a height of each of the two limiting flanges 27.The anti-slip ring 34 prevents the outer surface 22 of the object 20from directly impacting the ground or any surface.

With reference to FIG. 10, when the elastic cord 50 is not attached tothe positioning member 42 of the object 20, the user can directly gripthe handle 54 to lift the object 20 upwards and downwards, exercisingthe arm muscles. This is similar to lifting a dumbbell with one hand.With reference to FIG. 11, when the hooks 51 of the elastic cord 50 arerespectively coupled with an end of the axle 36 of the object 20 and afixing member 60 fixed on a fixed surface 58 (such as the ground or awall), the user can grip the handle 54 to lift the object 20 upwards anddownwards. In addition to the weight of the object 20, the user has toovercome the elastic load of the elastic cord 50, increasing the loadduring exercising. Furthermore, the object 20 is returned rapidly underthe action of the elastic returning force of the elastic cord 50.

In this exerciser 12 according to the present invention, the user cangrip the handle 54 to lift the object 20, proceeding with an exercisingeffect like a dumbbell. Alternatively, in the case that the elastic cord50 is attached, the elastic cord 50 increases the load while lifting theobject 20, and the elastic returning force of the elastic cord 50 canrapidly return the object 20 from a certain height to its originalposition, shortening the time for returning.

In view of the foregoing, the components according to the presentinvention can be selected to optionally form the exerciser 10 of arolling mode or the exerciser 12 of a lifting mode, providing variousexercising modes. Furthermore, the exerciser 10, 12 according to thepresent invention can have various combinations of components to meetdifferent user needs.

Now that the basic teachings of the present invention have beenexplained, many extensions and variations will be obvious to one havingordinary skill in the art. For example, sand bags and weights of variousforms can be placed into the receiving space 32 formed by the at leastone partitioning board 30 in the object 20 of the exerciser 12,obtaining a desired overall weight. Furthermore, the exerciser 12 doesnot have to include the anti-slip ring 34. Furthermore, the overallweight of the exerciser 10, 12 can be easily adjusted by varying thenumber or the weight of the at least one weight 52 or by removing all ofthe weights 52.

Thus since the invention disclosed herein may be embodied in otherspecific forms without departing from the spirit or generalcharacteristics thereof, some of which forms have been indicated, theembodiments described herein are to be considered in all respectsillustrative and not restrictive. The scope of the invention is to beindicated by the appended claims, rather than by the foregoingdescription, and all changes which come within the meaning and range ofequivalency of the claims are intended to be embraced therein.

1. An exerciser comprising: an object rotatable about a longitudinalaxis, wherein the object includes an outer surface and an inner surfaceopposite to the outer surface, wherein the inner surface includes anaxle seat extending along the longitudinal axis, and wherein a receivingspace is defined between the inner surface and the axle seat; an axlerotatably coupled to the axle seat of the object, wherein the axleincludes two ends extending beyond the outer surface of the object; twojackets mounted around the two ends of the axle; and at least one weightremovably received in the receiving space of the object for increasingan overall weight of the exerciser.
 2. The exerciser as claimed in claim1, further comprising an anti-slip ring, wherein two limiting flangesare disposed on the outer surface of the object and are spaced from eachother along the longitudinal axis, wherein the anti-slip ring isdisposed around a maximum diameter of the outer surface of the objectand is located between the two limiting flanges, and wherein theanti-slip ring has a thickness greater than a height of each of the twolimiting flanges.
 3. The exerciser as claimed in claim 1, wherein theobject includes a first half shell and a second half shell detachablycoupled with the first half shell, wherein the axle further includes afirst section and a second section aligned with the first section alongthe longitudinal axis, wherein the first section is disposed on thefirst half shell, wherein the second section is disposed on the secondhalf shell, wherein at least one partitioning board is disposed betweenan outer periphery of the axle seat and the inner surface of the objectand has two portions respectively disposed in the first half shell andthe second half shell, wherein the first half shell includes a pluralityof through-holes spaced from each other in a circumferential directionabout the longitudinal axis, wherein the second half shell includes aplurality of screw holes respectively aligned with the plurality ofthrough-holes of the first half shell, and wherein a plurality of screwsextends through the plurality of through-holes of the first half shelland threadedly couples with the plurality of screw holes.
 4. Theexerciser as claimed in claim 1, further comprising: two positioningmembers coupled to the two ends of the axle, respectively; and anelastic cord unit including two ends, with each of the two ends of theelastic cord unit detachably coupled with a respective one of the twopositioning members.
 5. The exerciser as claimed in claim 4, wherein theelastic cord unit includes: two elastic cords each including two ends,wherein each of the two elastic cords includes a first hook and a secondhook attached to the two ends thereof, respectively, wherein each firsthook is detachably coupled with a respective one of the two positioningmembers; and a positioning strap including two side flaps, wherein eachof the two side flaps has a coupling ring, wherein each second hook isdetachably coupled with the coupling ring of a respective one of the twoside flaps, and wherein the positioning strap is non-stretchable andincludes a protective pad on a surface thereof.
 6. An exercisercomprising: an object including an outer surface and an inner surfaceopposite to the outer surface, wherein the inner surface includes anaxle seat extending along the longitudinal axis, and wherein a receivingspace is defined between the inner surface and the axle seat; an axlecoupled to the axle seat of the object, wherein the axle has a lengthlarger than or equal to an outer diameter of the object; at least oneweight removably received in the receiving space of the object 30; apositioning member coupled to one of the two ends of the axle; a handlecoupled to and at a non-parallel angle to another of the two ends of theaxle; and an elastic cord including two ends, wherein the elastic cordincludes a first hook and a second hook attached to the two endsthereof, respectively, wherein the object is located between thepositioning member and the handle, and wherein the handle is configuredto be gripped by a user to lift the object, and wherein the first hookis selectively and detachably coupled with the positioning member andthe second hook is selectively and detachably coupled with a fixedmember on a fixed surface, increasing a load to the user.
 7. Theexerciser as claimed in claim 6, wherein the object includes a firsthalf shell and a second half shell detachably coupled with the firsthalf shell, wherein the axle further includes a first section and asecond section aligned with the first section along the longitudinalaxis, wherein the first section is disposed on the first half shell,wherein the second section is disposed on the second half shell, whereinat least one partitioning board is disposed between an outer peripheryof the axle seat and the inner surface of the object and has twoportions respectively disposed in the first half shell and the secondhalf shell, wherein the first half shell includes a plurality ofthrough-holes spaced from each other in a circumferential directionabout the longitudinal axis, wherein the second half shell includes aplurality of screw holes respectively aligned with the plurality ofthrough-holes of the first half shell, and wherein a plurality of screwsextends through the plurality of through-holes of the first half shelland threadedly couples with the plurality of screw holes.
 8. Anexerciser comprising: an object including an outer surface and an innersurface opposite to the outer surface, wherein the inner surfaceincludes an axle seat extending along the longitudinal axis, and whereina receiving space is defined between the inner surface and the axleseat; an axle having a length larger than or equal to an outer diameterof the object; at least one weight removably received in the receivingspace of the object; two jackets; two positioning members; a handle; twoelastic cords each including two ends, wherein each of the two elasticcords includes a first hook and a second hook attached to the two endsthereof, respectively; a positioning strap including two side flaps,wherein each of the two side flaps has a coupling ring, and wherein thepositioning strap is non-stretchable and includes a protective pad on asurface thereof; wherein the exerciser includes a rolling mode havingthe object, the axle, the two jackets, the two positioning members, thetwo elastic cords, and the positioning strap and a lifting mode havingthe object, the axle, one of the two positioning members, one of the twoelastic cords, and the handle, wherein when the exerciser is in therolling mode, the axle is rotatably coupled with the axle seat with twoends of the axle extending beyond the object, the two jackets aremounted around the two ends of the axle, the two positioning members aremounted to the two ends of the axle, each first hook of each of the twoelastic cords is detachably coupled with a respective one of the twopositioning members, each second hook of each of the two elastic cordsis detachably coupled with the coupling ring of a respective one of thetwo side flaps of the positioning strap; wherein when the exerciser isin the lifting mode, the axle is rotatably coupled with the axle seat,the one of the two positioning members is coupled to one of two ends ofthe axle, the handle is coupled to another end of the two ends of theaxle and is at a non-parallel angle to the axle, the first hook of theone of the two elastic cords is detachably coupled with the one of thetwo positioning members, and the second hook of the one of the twoelastic cords is detachably coupled with a fixed member on a fixedsurface.
 9. The exerciser as claimed in claim 8, wherein the objectincludes a first half shell and a second half shell detachably coupledwith the first half shell, wherein the axle further includes a firstsection and a second section aligned with the first section along thelongitudinal axis, wherein the first section is disposed on the firsthalf shell, wherein the second section is disposed on the second halfshell, wherein at least one partitioning board is disposed between anouter periphery of the axle seat and the inner surface of the object andhas two portions respectively disposed in the first half shell and thesecond half shell, wherein the first half shell includes a plurality ofthrough-holes spaced from each other in a circumferential directionabout the longitudinal axis, wherein the second half shell includes aplurality of screw holes respectively aligned with the plurality ofthrough-holes of the first half shell, and wherein a plurality of screwsextends through the plurality of through-holes of the first half shelland threadedly couples with the plurality of screw holes.